Knob and spindle construction



' Jan.; 16; 1923. LMZQ).

C. I.PARKER.

KNOB ANO SPINDLE CONSTRUCTION.

-FILED JAN'. 10| 1922.

@i y INVENTOR fr A l' Wie/Jv l BY mw m ATToRNEx/ patented dan. lb, l923.

NETE@ CHARLES I. PARKER, OF NEW' BRITAIN, CONNECTICUT, ASSTGNOR T0AMERICAN HARDWARE CORPORATON, OF NEVV BRITAN, CONNECTICUT, A CORPORATIONOF CONNECTICUT.

KNOB AND SPINDLE CONSTRUCTION.

Application filed January 10, 1922. Serial No. 528,153.

To all fw 710m t 'may concern.'

Be it known that li, CHARLES l. Pannen, a citizen et the United Stateset America., residing at N ew Britain, Connecticut, have invented a newand useful Knob and Spindle Construction7 et Which the following is aspecification.

My invention relates te an improved knob and spindle construction. Theobject ot the invention is not only to improve the structure in such aWay lthat it will lend itseltl adiniirably to being produced indifferent designs, but, from the standpoint of manui'acturing, otherconspicuous advantages Will be gained as will hereinafter be seen.

In the accompanying drawing:

Fig. l is a side elevation of shank portion of my new construction.

Fig. 2 is a similar view of the knob or handle portion.

Fig. 3 is a longitudinal section of the parts shown in Fig. l.

Fig. 4 is a rear elevation and section taken on the line 4-4 of Fig. l.

Fig. 5 is a view of all the parts assembled, said view being partly insection.

l represents the knob or handle, which part is intended for engagementby the hand. 2 represents a coupling shank. 3 represents the ordinarylatch operating spindle usually made from iron. This spindle ispreferably cast into the shank 2. 4 represents a short spindle. Thisshort spindle is usually made from iron or steel and is preferably castinto the handle or knob l. The spindles 3 and 4 are square incross-section. ln the outer end of the coupling shank 2 is alongitudinal cavity ot a cross section appropriate to receive theprojecting end of the short spindle 4. 5--5 represents notches orrecesses formed in the corners of that part of the short spindle whichstands Within the shank 2 when the parts are assembled. As shown in thedrawing, the shank is preferably formed with a raised annular rib 6which is positioned over the notched portion of the spindle 4 so thatwhen the parts are slid together, a powerful pressure may beadvantageously applied to the sides et the knob shank so as to forcedown the rib or displace the metal of the shank sutlieiently to force aportion thereof into the notched part 5 of the short spindle, thuspermanently locking the parts l and 2 together. By this means thesymmetrical appearance of the shank is preserved.

rlhe invention is particularly useful when employed with a. knob andspindle construction in Which the handle is made in the form of a lever,and which it cast in final term together with a shank 2 and iron spindle3 would occupy so much room that only a coin*- paratively small numberof pieces could be cast at one time. By my improvement, at least twiceas many pieces may be cast at one time since they can be more compactlyarranged on a pattern and in the ask. Again, by the present improvementvarious coinbinations ot dillerent handles and shanks may be easily madeto produce different designs Without the necessity of making a coinpletepattern and mould tor each special de.- sign.

What l claim. is:

A handle having a short coupling spindle ot square cross-section rigidlyconnected thereto, a coupling shank, a relatively longl spindle ofsquare cross-section for connection to said shank at one end, said shankhaving a recess in the opposite end squared to receive the relativelyshort spindle, said short spindlel having notches in its corners withportions of the metal of the shank forced into said notches topermanently unite said parts.

CHARLES l. PARKER.

